I have a straighten neck. My neck could had been straightening for years due to having one leg shorter than the other causing skeleton imbalance, bad posture or from lots of daily forward head bending. My neck did straighten more immediately from whiplash due to muscle spasms and that also caused my TMJ.
I have some hearing loss, but I doubt that is why I have high pitch ringing that will move from one ear to the other, becomes head centralized and decrease or increase whenever. It's my neck spine placing pressure on my brain stem causing less oxygen and blood to the brain which also causes headaches. This is in combination to a straighten spine placing pressure on muscles causing imbalance and nerve pressure. This also causes soreness in shoulders, arms, hips, lower back and legs. From having lack of oxygen and blood to the brain, my heart is becoming enlarged. My straighten spine is also starting to cause disc problems mostly in the C1 and C2 with increased arthrosis from that.
A normal curve in the neck may be a must for those with neck T. To place my curve back into my straighten neck spine, I'm using a folded towel to place a little pressure against resistance to the back of the neck. There's videos for this. After using the towel method, I have light touch therapy on all large muscles in neck and I have the shoulders and lower back lightly massaged. With my age, heart condition, and diseased neck conditions, other neck adjustment treatment would be dangerous as well as over stretching techniques.
I use a small soft pillow folded under neck for sleeping. I been doing this stuff and it's helping to bring my severe T down a little, but the pitch is still sharp.
I may post again saying this isn't the solution, but I'm trying. I think if I can get my dental situation straightened out, maybe not so much just my entire TMJ problem and get my T lowered to a 7, then I should be able to habituate. I habituated almost completely the first time from T when it finally dropped to a 6-6.5 level to about the volume of a microwave oven.
Bless all.